WM_DEVMODECHANGE

The WM_DEVMODECHANGE message is sent to all top-level windows whenever the user changes device-mode settings.

WM_DEVMODECHANGE 
lpszDev = (LPCTSTR) lParam; // pointer to device name 
 

Parameters

lpszDev

Value of lParam. Pointer to the device name specified in the WIN.INI file.

Return Values

An application should return zero if it processes this message.

Remarks

Windows NT: Calls to functions that change the WIN.INI file may be mapped to the registry instead. This mapping occurs when WIN.INI and the section being changed are specified in the registry under the following keys:

HKEY_LOCAL_MACHINE\Software\Description\Microsoft\
Windows NT\CurrentVersion\IniFileMapping

The change in the storage location has no effect on the behavior of this message.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in winuser.h.

See Also

Device Contexts Overview, Device Context Messages, WM_WININICHANGE